نتایج جستجو برای: t2 relaxometry

تعداد نتایج: 31231  

2015
VÍT HERYNEK DITA WAGNEROVÁ ALBERTO MALUCELLI JOSEF VYMAZAL MARTIN SAMEŠ MILAN HÁJEK

The accumulation of iron in the brain is a common physiological process. However, alterations in the deposition of iron or other paramagnetic substances are associated with various diseases. In the present study, the deposition of paramagnetic substances in patients with brain tumours was evaluated using T2 relaxometry. A total of 23 patients with untreated tumours or with recurrent tumours fol...

2014
Guillaume Bonnier Alexis Roche David Romascano Samanta Simioni Djalel Meskaldji David Rotzinger Ying-Chia Lin Gloria Menegaz Myriam Schluep Renaud Du Pasquier Tilman Johannes Sumpf Jens Frahm Jean-Philippe Thiran Gunnar Krueger Cristina Granziera

INTRODUCTION In patients with multiple sclerosis (MS), conventional magnetic resonance imaging (MRI) provides only limited insights into the nature of brain damage with modest clinic-radiological correlation. In this study, we applied recent advances in MRI techniques to study brain microstructural alterations in early relapsing-remitting MS (RRMS) patients with minor deficits. Further, we inve...

Journal: :AJNR. American journal of neuroradiology 2012
P N Margariti L G Astrakas S G Tsouli G M Hadjigeorgiou S Konitsiotis M I Argyropoulou

BACKGROUND AND PURPOSE The pathophysiology of eRLS has not yet been elucidated. The purpose of the study was to assess, in patients with eRLS, the volume, iron content, and activation of the brain during night-time episodes of SLD and PLMs. MATERIALS AND METHODS Eleven right-handed unmedicated patients with eRLS (mean age, 55.3 ± 8.4 years; disease duration, 17.5 ± 14.05 years) and 11 matched...

Journal: :Brain : a journal of neurology 2003
Rod C Scott J Helen Cross David G Gadian Graeme D Jackson Brian G R Neville Alan Connelly

The aim of this study was to determine whether partial epilepsy is associated with abnormalities in hippocampi that are not the primary seizure focus. As hippocampal T2 relaxometry is useful for identifying abnormalities that are not obvious on visual assessment of MRI, this was the method employed. Of 457 consecutive children and young adults from whom T2 relaxometry data were obtained, 96 had...

Journal: :iranian journal of radiology 0
tevfik guzelbey department of radiology, school of medicine, yeditepe university, istanbul, turkey bengi gurses department of radiology, school of medicine, koc university, istanbul, turkey; department of radiology, school of medicine, koc university, istanbul, turkey erman ozturk department of hematology, school of medicine, koc university, istanbul, turkey olcay ozveren department of cardiology, school of medicine, yeditepe university, istanbul, turkey aysegul sarsilmaz department of radiology, school of medicine, yeditepe university, istanbul, turkey ebru karasu department of radiology, school of medicine, yeditepe university, istanbul, turkey

conclusion adrenal iron in β-tm can be reliably measured in 3 tesla mri. the results highlight the absence of correlation between adrenal iron deposition both with serum ferritin and hepatic iron. results among patients, there was no significant correlation between plasma ferritin and adrenal t2*. significant difference was detected among t2* values of adrenals between the patient and control g...

2014
B.A. Duffy K.P. Chun D. Ma M.F. Lythgoe R.C. Scott

Anti-inflammatory therapies are the current most plausible drug candidates for anti-epileptogenesis and neuroprotection following prolonged seizures. Given that vasogenic edema is widely considered to be detrimental for outcome following status epilepticus, the anti-inflammatory agent dexamethasone is sometimes used in clinic for alleviating cerebral edema. In this study we perform longitudinal...

Journal: :Journal of Biomedical Engineering and Medical Imaging 2016

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